Receiver lock



FIG. 1 is a perspective view of the design of the persent application;

FIG. 2 is a top view of the lock shown in FIG. 1;

FIG. 3 is a bottom view of the lock shown in FIG. 1;

FIG. 4 is a front view of the lock shown in FIG. 1;

FIG. 5 is a side view of the lock shown in FIG. 1; and,

FIG. 6 is a back view of the lock shown in FIG. 1.

The broken lines are for illustration purposes only and form no part of the claim design. The broken lines, which define the boundaries of the claimed design, form no part thereof. 

The ornamental design for a receiver lock, as shown and described. 